3(x+5)²-2(3-x)²+(9-x)(9+x=0)

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3(x+5)²-2(3-x)²+(9-x)(9+x=0)

3(x+5)²-2(3-x)²+(9-x)(9+x=0)
3(x+5)²-2(3-x)²+(9-x)(9+x=0)

3(x+5)²-2(3-x)²+(9-x)(9+x=0)
3x²+30x+75-2x²+12x-18+81-x²=42x+138=0
x=-23/7